PHPWales 2020 - June 3rd to June 4th

Ds\Vector::slice

(PECL ds >= 1.0.0)

Ds\Vector::slice Returns a sub-vector of a given range

Beschreibung

public Ds\Vector::slice ( int $index [, int $length ] ) : Ds\Vector

Creates a sub-vector of a given range.

Parameter-Liste

index

The index at which the sub-vector starts.

If positive, the vector will start at that index in the vector. If negative, the vector will start that far from the end.

length

If a length is given and is positive, the resulting vector will have up to that many values in it. If the length results in an overflow, only values up to the end of the vector will be included. If a length is given and is negative, the vector will stop that many values from the end. If a length is not provided, the resulting vector will contain all values between the index and the end of the vector.

R√ľckgabewerte

A sub-vector of the given range.

Beispiele

Beispiel #1 Ds\Vector::slice() example

<?php
$vector 
= new \Ds\Vector(["a""b""c""d""e"]);

// Slice from 2 onwards
print_r($vector->slice(2));

// Slice from 1, for a length of 3
print_r($vector->slice(13));

// Slice from 1 onwards
print_r($vector->slice(1));

// Slice from 2 from the end onwards
print_r($vector->slice(-2));

// Slice from 1 to 1 from the end
print_r($vector->slice(1, -1));
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Ds\Vector Object
(
    [0] => c
    [1] => d
    [2] => e
)
Ds\Vector Object
(
    [0] => b
    [1] => c
    [2] => d
)
Ds\Vector Object
(
    [0] => b
    [1] => c
    [2] => d
    [3] => e
)
Ds\Vector Object
(
    [0] => d
    [1] => e
)
Ds\Vector Object
(
    [0] => b
    [1] => c
    [2] => d
)

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